Signaling device



April 11; 1939.

c. w. HEINEMAN El AL SIGNALING DEVICE Filed Oct. 13, 1936 3 Sheets-Sheet 1 IIwH M I U F H IWWWI .1 HEINEMAN,

CHARLESWILLIAM EDGAR B.THOM H April 11, 1939.

c. w. H ElNEMA N ET AL SIGNALING DEVICE Filed Oct. 13, 1956 3 Sheets-Sheet 2 llvlllllllllllll .lll

CHARLES WILLIAM HEINEMAN, EDGAR .B. THOMAS.-

Patented Apr. 11, 1939 PATENT OFFICE SIGNAIJNG DEVICE Charles William Hei'neman and Edgar B. Thomas, Connersvillc, Ind.

Application October 13, 1936, Serial No. 105,409

3 Claims.

This invention relates to typewriters and in particular to signaling devices for indicating when the bottom of the page is being approached, so that the operator willbe warned to leave an 5 adequate space at the bottom of the page.

One object of this invention is to provide a signaling device responsive to the reaching of the bottom of the page, and have an alarm operated to indicate this condition to the operator.

which is actuated by means operative upon the passage of the end ofthe paper, this arrange ment being operative to ring a hell or sound an alarm or give other means of indicating the con 16 dition ofthe paper so that the operator may remove the work from the machine and insert a new set of sheets.

Hitherto the difiiculty has constantly arisen in typing work of this nature that the operator has continued to type line after. line upon the sheet and is only warned of the approachof the bottom of the sheet when thepaper slips to one side or becomes disarranged.

Another object isto provide a signaling device for typewriters, either in a form to be built into new typewriters, or attached to a typewriter already built, this device being arranged with cam operated mechanism adapted to operate a bell or other signaling device when the end of the paper passes and releases the cam.

In the drawings:

Figure '1 is a front elevation of a typewriter,

platen and certain of its associated mechanisms showing the signaling device of this invention. the assembly shown in Figure 1.

. Figure 3is a left hand elevation of Figure 1 with the spacing lever broken away, to. disclose the mechanism behind it.

Figure 4 is a vertical section along the line 4-4 in Figure 1, showing certain details of the signaling device.

Figure 5 is a cross section along the line 5-5 in Figure 1.

Figure 6 is a cross section along the line 6-6 in Figure 1.

Figure '7 is a diagrammatic cross sectional view showing the paper guide and its associated elements.

Figure 8 is a fragmentary view showing a portion of the paper guide with the aperture therein for the operating mm.

Figure 9 is a bottom plan view of a portion of the slotted angle member secured to the paper 65 guide.

Another object is to provide a signaling device Figure 2 is a top plan view of the left end of,

Figure 10 is 'a perspective view of the'finger-' piece and its connected devices, looking upwardly from beneath the platen.

Figure 11 is a vertical transverse sectional view taken on the line ll-,-ll of Figure 10 looking in the direction of the arrow showing the typewriter paper in feeding relation to the platen roller and the finger-piece with its armand its actuating spring in inoperative position.

Figure 12 is a like vertical transverse sectional view, at the time when the parts have moved from their position shown in Fig. 11. to their later position as shown 'in Figure 12, of the platen roller taken'on the same line I 1- of Fig. 10, looking in the direction of the arrow showing the typewriter paper in fed relation to the platen roller and the finger-piece with its arm and its actuating spring in operative position to cause the alarm to ring to notify the operator that the paper has been fed the'limit to allow a margin of the paper below the last typewritten line.

Referring to the drawings in detail:

Figure I shows a portion of a typewriter having The rod ,8 also carries arms II the upper ends of which carry the paper guide 12. The latter is a curved metal plate running from end to end of the platen and having slots I3.therein for the passage of the gripping rolls "1.. Secured to the paper guide [2 is an angle strip M, the latter being soldered to the ends of the paper guide I2,

leaving a slight space therebetween for the passage of the paper. The angle strip is provided with slot i5 (Figure 9) which is aligned with aperture I6 in the paper guide l2. The rod 6, which supports the rod 9, also supports the rod Pivotally mounted upon stud screws 20 and 2| at the opposite end plates 4 and 5 is an elongated member 220i arcuate cross section having an extended portion 24, (Figure 5), carrying a cam member or finger 26. The cam member 26 projects upwardly through the aperture .16 and slot I5 when there is no paper in the machine. When paper has been inserted in the machine however, it forces the cam member 26 downwardly so. that it is in aposition outside of the apertures IS.

The left hand end of the elongated member 22 is provided with an arm 21 (Figures 3 and 4),

18, the latter carrying additional gripping rolls l9.

which extends upwardly and passes through a slot 28 in the top portion 29 of the left hand end v and'permits it to move upwardly into the hole [6 and"slot -l5, the upper end' 30 of the arm 21 moves upwardly into the slot 28 and projects beyond the top thereof. A coil spring 3i secured at 32 to the arm 21 and at 33 to the end plate 4 urges the arm 27 and the cam member 26 in an upward direction. Mounted on the opposite ends of the rod Gand spaced therefrom between cpllars 34 are L shaped arms35, the upper ends 36 of which extend horizontally beneath the ends I of the paper guide 52, and support its opposite ends. Mounted upon the top portion 29 of the end plate 4 (Figure 2) is a sliding member 37! carrying pin .38 adapted to pivotallysupport a lever 39. The outer end of this lever it carries a clapper 0 for ringing a bell ill the latter being mounted as at lZ'upon the arm ti extending downwardly from and forming a part of the sliding member 31. The sliding member 3? is guided in its-reciprocatory motion by the tongues fi land extending over it and integral with the upper portion 29 of the end plate 4. One of the tongues 45 extending upwardly through a slot it formed at the junction of-the arm 43 with the sliding member 3! permits: the sliding motion thereof while serving asa guide. 7 g

The opposite end of the lever 39 from the clapper 40 is provided with a contact portion tl adapted to be engaged by the upper end it of the arm 2i when'this upper end is caused to project upwardly through the slot 253. A coil spring dd encircles the pin 38 and urges the end d'l oi. the

The end plated near its top front portion is provided with an extended portion hill (Figure 2) serving to support a pivot pm t l upon which is mounted a spacing lever 52. Thelatteris of hellcrank form and is provided with'a portion 53 adapted to engage member M so that the latter is operated when the lever iii is moved. Member Ed is secured as at 55 to the sliding member ill.

The platen shaft 3 carries a ratchet wheel 58 (Figure 2) which is operated'by pawl mechanism 59 operatively connected to the spacing lever 52 in the conventional manner. This mechanism is omitted in Figure 1 so as to show the signaling device more clearly.

In the operationof this invention, the paper is inserted in the typewriter in the usual manner but is caused to pass beneath the angle strip M f and above the paper guide l2.

, The position of the paper'assembly 5B is shown in Figure 5 after the end El thereof has passed the aperture it and I r not lithereby permitting the cam member 26 to move'upwardly into said aperture and slot.

" iiwhl'l the'paper is in its normal position before the bottom of the sheet is reached it occupies the osition shown'in Figure 6. In this position the d n-portion 26 is'for'ced downwardly causing" the 21 to move downwardly and its upper end f to'fallbeneath the slot 8- j When the typist has operated the shift lever "space the paper a suificient number of times tobause the bottomjl thereof to pass the aperture IS, the cammember 26 moves upwardlyin response to the urge 0f the spring 3| thereby causing the arm 21 to move upwardly and its top reached, and that another assembly of sheets should be placed in the machine. It should be observed that the cam member 26 is placed upon the side oi. the platen so that contact motionv thereof is made when the bottom edge oi the paper moves upwardly. By reason of this position, the device always gives a certain predetermined margin at the bottom ofthe page, regardless of the particular spacing being used.

'Referring now to Figures 10, 11, and 1?, and more particularly at this point, Figures 11 and 12, the platen-roller l and the typewriter paper 55 a are shown with the paper moving downward in Figure, 11 until it reaches the position shown in Figure 12. When the paper is thus traveling, it passes over the finger-piece 2t and beneath the angle strip H, but in engagement or contact with the finger-piece as best shown in Figure 11. The paper guide plate I? permits this contact between the finger-piece 26 and the paper through the aperture I 6 in this plate; And during such period the paper is also bodily beneath the angle strip l4.

During the time the parts are in the relative positions here set forth, as shown in Figure 11, the arm ii is out of operative position with respect to its cooperation with the clapper lever W.

The arm is mounted on the finger-piece shaft 9. It will be observed from Figure 10 that the finger-piece 2t and the arm 21! are interconnected by an arcuate plate 22 so that the finger-piece it and the arm 2i! will operate in unison, the finger- ,piece serving to swing the arm tll when it is depressed by the paper and the spring ti serving to swing the arm upward when the finger-piece moves from the position shown in Figure 11 to that shown in Figure 12, and makes contact in the latter position with the platen roller, the

paper having also then moved to the position shown in Figure 12.

Referring specifically to Figure 12 it will be seen that the paper has moved in the direction 7 moved upward to contact with-the roller, the

finger-piece in moving from its lower position, shown in Figure ll, to its elevated position shown inFigure 12, passing across the aperture it.

And this action of the spring 3i also swings thearm 2 from its inoperative position with vrespect to the clapper lever, to its operative positionfor being reached by the clapper lever 3%.

'As heretofore stated in this specification, when the parts have operated and assumed the ultimate positions as shown in Figures 5 and 6, and more clearly shown in the enlarged views, Figures 11 and 12, the upper end of the arm 21 will be positioned, by the action of the spring M, at a.

place in the slot 28, for contact with the clapper lever 39 whenthe operator actuates the lever 52 and the slide 31'. Of course, the operator of the typewriter operates the lever-52 at the end of every line. Ifat any of these times, the paper tact with the angle strip [4 and direct the paper downward between the angle strip l4 and paper guide l2, the paper forcing the finger-piecedownward from the position shown in Figure 12 to tha shown in Figure 11.

Finally, it will be'noted that we provide a paper guide l2 below the platen-roller, such guide being adapted to support the paper if it lags below the adjacent part of the periphery .of the roller. This arrangement so maintains or positions the finger-piece that the paper bears on the fingerpiece 26. And again, we provide a further strip or sheet which makes contact with the paper near its lower edge or end,'at which time the fingerpiece 26 rises from its position when in contact with the paper to the position of contact with the periphery of the roller. spring 3| so operates the finger-piece, that when the paper is feeding through the machine it makes contact with the finger-piece until the lower end of the sheet has reached the point of contact with the metal plate, at which time the paper has neared the periphery of the'roller and freed itself from contact with-the finger-piece.

It will be understood that we desire to comprehend within our invention such modifications as come within the scope of the claims and the invention.

' Having thus fully described our invention, what we claim as new and desire to secure-by, Letters Patent is:

1. In combination with a typewriter having a platen and line spacing mechanism thereon, an

angle strip having an aperture therein carried below said platen and adjacent thereto for spacing a paper sheet therefrom, an elongated movable member arranged with its axis parallel with the axis of said platen, a spring pressed finger carried by said elongated movable member and having a cam portion thereon extending bel w and adapted to be resiliently urged into said aperture, an arm carried on said elongated movable member movable therewith, signal means associated with said line spacing mechanism and movable therewith, said finger, said elongated movable member and said arm adapted to be moved in one direction upon cooperation of said cam.

portion with the entering edge of a paper sheet The action of the cam portion whereby said signa means will function upon operation of said line spacing mechanism.

-2. In combination with a typewriter having a platen and line spacing mechanism thereon, said line spacing mechanism having a platen operating movement and a resetting movement, an angle strip having an aperture therein carried below said platen and adjacent thereto for spacing a papersheet therefrom,an elongated movable member arranged with its axis parallel with the axis of said platen, a spring pressed finger carried by said elongated movable member and having a cam' portion thereon extending below and adapted to be resiliently urged into saidaperture, an arm carried on said elongated movable member movable therewith, signal means associated with said line spacing mechanism and movable therewith, said finger, said elongated movable member and said arm adapted to be moved in one direction upon the cooperative engagement of said cam portion and the entering edge of a paper sheet and in the reverse direction when the bottom edge-of the paper sheet has passed said cam portion, said arm adapted to be moved into a position for engagement with said signal means when the bottom edge of the paper sheet has passed said cam portion whereby said signal means will function upon each resetting movement of said line spacing mechanism.

3'. In combination with a typewriter having a platen and a line spacing mechanism thereon, an apertured paper spacing strip carried below said platen and adapted to space the paper away from said platen, an aperture paper guide carrangedparallel to the axis of said platen, said movable member adapted for limited rotation about its axis, a spring pressed finger carried by .said movable member for movement therewith extending below said paper guide and having a cam portion thereon adapted to be resiliently urged into said apertures in the absence of paper between said paper guide and said paper spacing strip and adapted to be retracted from said apertures by the cooperative engagement of the entering edge of the paper and said cam, signal means carried on said line spacing mechanism for movement therewith, said signal means having a trip lever thereon, an arm carried by said movable member movable, therewith, said am adapted to be moved into a position for engagement with said trip lever when the bottom edge of the paper has passed said cam portion whereby the signal will function upon operation of said line spacing mechanism.

CHARLES WILLIAM EDGAR B. moms. 

